﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class Apple
    {
        public  double Jia(double num1,double num2)
        {
            return num1 + num2;
        }
        public double Jian(double num1,double num2)
        {
            return num1 - num2;
        }

        internal static object Chen()
        {
            throw new NotImplementedException();
        }

        internal static object Chu()
        {
            throw new NotImplementedException();
        }

        internal static object Jian()
        {
            throw new NotImplementedException();
        }

        internal static object Jia()
        {
            throw new NotImplementedException();
        }

        public double Chen(double num1,double num2)
        {
            return num1 * num2;
        }
        public double Chu(double num1, double num2)
        {
            return num1 / num2;
        }

    }
}
